🧮 Utility Theory | TU · MU · Diminishing Marginal Utility

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Consumption Quantity Consumed

Total Utility (总效用) : The total satisfaction received from consuming a given quantity of a good or service.
Marginal Utility (边际效用) : The additional satisfaction gained from consuming one more unit of a good or service.
💡 Diminishing Marginal Utility (边际效用递减): As consumption increases, the additional satisfaction from each extra unit tends to fall.

Data Utility Schedule

Qty (Q) Total Utility (TU) Marginal Utility (MU)
💡 Connection: TU is the sum of all previous MU values. MU = ΔTU / ΔQ. As Q increases, MU typically falls — this is Diminishing Marginal Utility.